Supplementary Material s76

Supplementary material

Figure 1. Selenium (Se) concentration in leaves collected in 2011 and 2014. Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

Figure 2. Selenium (Se) concentration in tree trunk collected in 2014. Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

Figure 3. Climatic parameters recorded in 2012, 2013 and 2014 by CIMIS (California Irrigation Management Information System) weather station located 2 km away at the University of California Kearney Research Station in Parlier, CA

Figure 4. Total boron (B) concentration in soil collected in 2012 and 2014 at two different soil depths (0-30 cm and 30-60 cm). Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

Figure 5. Water soluble boron (B) concentration in soil collected in 2012 and 2014 at two different soil depths (0-30 cm and 30-60 cm). Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

Figure 6. Boron (B) concentration in tree trunk collected in 2015. Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

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Figure 7. Total boron (B) concentration in leaves collected in 2011 and 2014. Bars and error bars represent average and standard errors (n=5), respectively. Similar letters indicate no statistical (P≤0.05) difference among irrigation treatments (Se = <1 dS m-1, 0.25 mg Se L-1; Se+B = <1 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTI = 6 dS m-1, 0.25 mg Se L-1; Se+SLTI+B = 6 dS m-1, 0.25 mg Se L-1, 4 mg B L-1; Se+SLTII = 9 dS m-1, 0.25 mg Se L-1; Se+SLTII+B = 9 dS m-1, 0.25 mg Se L-1, 4 mg B L-1).

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